// const env = require('./config.js'); //配置文件，在这文件里配置你的OSS keyId和KeySecret,timeout:87600;
var request = require("../request/request.js");

const base64 = require("./base64.js"); //Base64,hmac,sha1,crypto相关算法
require("./hmac.js");
require("./sha1.js");
const Crypto = require("./crypto.js");

/*
 *上传文件到阿里云oss
 *@param - filePath :图片的本地资源路径
 *@param - dir:表示要传到哪个目录下
 *@param - successc:成功回调
 *@param - failc:失败回调
 */
const env = {
  AccessKeySecret: "", // AccessKeySecret 去你的阿里云上控制台上找
  OSSAccessKeyId: "", // AccessKeyId 去你的阿里云上控制台上找
  timeout: 87600, //这个是上传文件时Policy的失效时间
}; //配置文件，在这文件里配置你的OSS keyId和KeySecret,timeout:87600;

async function initOSS() {
  return request.getRequest("/aliyun/oss/token").then((result) => {
    env.OSSAccessKeyId = result.data.accessKeyId;
    env.AccessKeySecret = result.data.accessKeySecret;
    // client = new OSS({
    //   region,
    //   bucket: ossBucket,
    //   accessKeyId: result.data.accessKeyId,
    //   accessKeySecret: result.data.accessKeySecret,
    //   stsToken: result.data.securityToken,
    // });
  });
}

const uploadFile = async function (filePath, successc, failc, dir = 'framework/') {
  await initOSS();
  // console.log(env);
  if (!filePath || filePath.length < 9) {
    uni.showModal({
      title: "图片错误",
      content: "请重试",
      showCancel: false,
    });
    return;
  }

  //图片名字 可以自行定义，     这里是采用当前的时间戳 + 150内的随机数来给图片命名的
  const aliyunFileKey =
    dir + new Date().getTime() + Math.floor(Math.random() * 150) + ".png";

  const aliyunServerURL = "https://hxgk-oss-dev.huaxun.ink/"; //OSS地址，需要https
  //   const accessid = env.OSSAccessKeyId;
  const policyBase64 = getPolicyBase64();
  const signature = getSignature(policyBase64); //获取签名
  // console.log("aliyunFileKey", aliyunFileKey);
  // console.log("policyBase64", policyBase64);
  // console.log("OSSAccessKeyId", env.OSSAccessKeyId);
  // console.log("signature", signature);
  // console.log("filePath", filePath);
  uni.uploadFile({
    url: aliyunServerURL, //开发者服务器 url
    filePath: filePath, //要上传文件资源的路径
    name: "file", //必须填file
    formData: {
      key: aliyunFileKey,
      policy: policyBase64,
      OSSAccessKeyId: env.OSSAccessKeyId,
      signature: signature,
      success_action_status: "200",
    },
    success: function (res) {
      // console.log('res',res);
      // console.log(res);
      if (res.statusCode != 200) {
        failc(new Error("上传错误:" + JSON.stringify(res)));
        return;
      }
      // console.log(aliyunServerURL + aliyunFileKey);
      successc(aliyunServerURL + aliyunFileKey);
    },
    fail: function (err) {
      err.wxaddinfo = aliyunServerURL;
      failc(err);
    },
  });
};

const getPolicyBase64 = function () {
  let date = new Date();
  date.setHours(date.getHours() + env.timeout);
  let srcT = date.toISOString();
  const policyText = {
    expiration: srcT, //设置该Policy的失效时间，超过这个失效时间之后，就没有办法通过这个policy上传文件了
    conditions: [
      ["content-length-range", 0, 5 * 1024 * 1024], // 设置上传文件的大小限制,5mb
    ],
  };

  const policyBase64 = base64.encode(JSON.stringify(policyText));
  console.log(policyBase64);
  return policyBase64;
};

const getSignature = function (policyBase64) {
  const accesskey = env.AccessKeySecret;

  const bytes = Crypto.HMAC(Crypto.SHA1, policyBase64, accesskey, {
    asBytes: true,
  });
  const signature = Crypto.util.bytesToBase64(bytes);
  console.log(signature);
  return signature;
};

module.exports = uploadFile;
